The Complete Handbook of Refrigerator Magnets
A professional's field guide to magnet construction, strength ratings, surface compatibility, and commercial applications
by Alumigogo Books
non-fiction
From ferrite to neodymium: constructions, strength ratings, surface science, and how to profit from printed magnets.
About this book
Why does a 30-cent ferrite magnet outperform a 2-dollar neodymium disc on a powder-coated door? How do you specify an exotic magnet that survives a commercial dishwasher? Why do 'flexible' rubber magnets lose their hold after a year, and what causes a magnet to silently lose its magnetic field? For professionals and serious users, refrigerator magnets are not a novelty purchase - they are a functional component that can make or break a product launch, a marketing campaign, or a manufacturing process.
This handbook answers those questions with data. It explains the physics of magnetic circuits without requiring a physics degree, breaks down every major magnet material type (ferrite, Alnico, samarium-cobalt, neodymium, and flexible rubber compounds) with its real-world strengths and liabilities, and provides standardized testing protocols you can perform with a cheap pull gauge and a kitchen scale. It covers manufacturing methods (die-cutting, injection molding, printing and lamination), typical cost-per-unit curves for different volumes, and adhesion fundamentals on virtually every common surface in a modern building.
The second half of the book turns to business. We cover supplier types, what a distributor actually does, how to private-label printed magnets for retail, and how to price jobs that include custom fabrication. We also cover installation, maintenance, and troubleshooting - including how to fix a magnet that has been damaged by heat, moisture, or physical shock. This is a practical reference, engineered for the workshop, the print shop, or the procurement office, not a coffee-table book.
Reader Reviews
David Young
★★★★★I bought this expecting a decent reference and it is that, though it's not quite the end-all guide I hoped for. The physics section is solid and the chapter on magnetic circuits was genuinely useful for understanding why my pull strength numbers were off. I'll keep it on my shelf. But I felt the 'business opportunities' chapter was a bit thin - it names the revenue models but doesn't go deep into any of them, and the supplier landscape chapter reads like it's already a few years outdated given how much the neodymium market has shifted. Fine as an overview, just not the deep-dive I wanted.
John Young
★★★★★Finally, a book that isn't just a series of photos of cute sayings on the fridge. The chapter on magnetic circuit theory, specifically closed-circuit vs. open-circuit design, helped me solve a manufacturer recall issue we were having with a batch of our printed giveaway magnets. I also appreciated the standardized pull-force testing procedure - I ran it on every batch since and it flags issues in 5 minutes. The maintenance section is short but practical. I've already recommended it to two other print shop owners. This is the reference manual the industry needed.